Walter ambus crowdus



(No Model.

W. A. GROWDUS. GALVANIG BATTERY.

No. 463,247. Patented Nov. 17, 1891.

FIG. 1. FIG

2 1P A 0 a FIG. 3. m

I 5 fi I i i i A I INVENTOR: WITNESSES: m M e, fi 935% By his At/omeys,

M fli? dim. finw UNITED STATES PATENT OFFICE.

WALTER AMBUS CROWDUS, on MEMPHIS, TENNESSEE, ASSIGNOR To Jo. w.

ALLISON, TRUSTEE, oE SAME PLACE.

GALVANIC BATTERY.

SPECIFICATION forming part of Letters Patent No. 463,247, dated November 17, 1891.

Application filed November 21, 1890. Serial No. 372,163. (No model.)

To ctZl whom it may concern.- 1 fastened to the bottom of the jar by a screw Be it known that I, \VALTER AMBUS GROW- or other fastening. hen the cell is first DUs,a citizen of the United States, residing in filled this receptacle E is empty, the level of Memphis, in the county of Shelby and State liquid being slightly below its top. As the 5 of Tennessee, have invented certain new and liquid expands it overflows the top of the reuseful Improvements in Electric Batteries, of cepta-cle and more or less fills it, thus prewhich the following is a specification. venting its overflowing the cell.

This invention relates to chemical or gal- The overflow-receptacle may be made as a vanic batteries, being more especially decompartment forming part of the jar, as 1o signed for two-fluid batteries. Itis well known shown in Figs. 3 and i, where E designates that in certain batteries the volume of electhe overflow-coinpartment. The jar is controlytic fluid is increased by the electric acstrncted with this compartment at one side tion, so that it the cell be filled nearly full it or end, and with perforations cl cl through the p is liable to overflow. My invention is deintervening partition 6, slightly below the top 15 signed to prevent this result. of the jar, and communicating with the com- Figure 1 of the accompanying drawings is partment containing the negative electrolyte. a plan of one cell of a battery embodying my The cell is filled with liquid to a level slightly invention. Fig. 2 is a vertical cross-section below these holes, and as the level rises the thereof. Figs. 3 and at show a modified conliquid overflows through these holes into the 2o struction, the former being a plan and the compartment- E.

latter a vertical section. The overflow-receptacle may be otherwise My invention consists in providing an overconstructed and arranged, its particular conflow'receptacle within the battery cell or jar, struction being immaterial to my invention.

with its top at alower level than the top of I claim as my invention- 25 the jar and higher than the normal or origi- 1. In a-galvanic battery, the jar thereof nal level designed for the liquid. This recepprovided with an overflow receptacle artacle is originally empty, and as the liquid ranged to receive and hold the excess of elecincreases in volume and its level rises it overtrolytic liquid as it increases in volume and flows the top of the receptacle, which thus prevent its overflowing the cell, Substantially 8o 30 receives the excess of liquid. The receptacle as specified.

has suflicient capacity to receive the entire 2. In combination with a galvanic battery, overflow of the liquid, so that after it is filled an overflow-receptacle within the battery-jar thereby the level of the liquid cannot rise and in connection with the compartment conmaterially above its top and consequently taining the negative electrolyte adapted to 5 cannot overflow the cell. receive the excess or": liquid when its level Referring to Figs. 1 and 2, A is the battery rises and before itrises to the level of the cell or jar, B the porous partition, 0 the mega jar, Substantially as specified. tive or carbon electrode, which is shown as a In combination with a galvanic battery, plate placed close against the porous partiaremovable receptacle in the battery-jar with 40 tion, and D the positive electrode, which may its top at a level lower than the top of the jar, be a zinc plate. The overflow-receptacle E is whereby it is adapted to receive the overflow arranged to receive the overflow of the negaof electrolytic liquid and prevent the overtive electrolyte. being placed in the negative flowing of the cell, substantially as specified. cell or compartment containing the carbon In witness whereof I have hereunto signed 5 45 plate. This overflow-receptacle is here conmy name in the presence of two subscribing structed as a separate receptacle in the form witnesses. of an men-topped cup, which is set in the T H batteryoch. Its height is such that its top ALLER AMBUS CROWDUb comes Slightly below the top of the jar. It is Witnesses: 5o constructed preferably of a tube a, with its J. L. HUDGINS,

lower end screwed onto a plug Z), which is J. MYERS. 

